Solution of the Impala Gold Company Case Study 2-28 (p. 69)

This problem has 6 decision variables defined as followsGround asF C

1 X1F X1CShaft # 2 X2F X2C

3 X3F X3C

where XIJ is the number of tons of rock ground in shaft I = 1,2,3 that are groundas J = F, C.

Shaft constraints:X1F + X1C

CF240,0000

F = X1F + X2F + X3FC = X1C + X2C + X3C

250,000 The equation of the line is(250,000/240,000) F + C = 250,000

So, the constraint is(250,000/240,000) F + C

LINDO fileTitle: Impala Gold Case 2-28MAX 11.88 X1F + 9.08 X2F + 6.28 X3F + 11.15 X1C + 8.55 X2C + 5.95 X3CSTSHAFT1) X1F + X1C